Guest messages work best short, and they can only stay short if the welcome book carries the detail. These five templates cover the whole arc of a stay; replace every bracket, and cut anything your book already answers.
Thanks for booking [property name] for [dates]! We're glad you're coming. I'll send full check-in details a few days before you arrive. If any plans change or you have questions before then, just message me here.
Hi [name], looking forward to [arrival day]. Check-in opens at [time]. The address is [address]; park [where]. Your door code comes the morning you arrive. Roughly when do you expect to get in? No need to be exact.
Today's the day! Your door code is [code], on the [which] door. Wifi is [network] / [password], also on the card by the fridge. The welcome book on the counter has the rest: house notes, trash day, and our favorite places nearby. Text me at [phone] if anything sticks.
Hi [name], hope the stay is treating you well. Anything you need from me? One thing worth knowing for [day]: [one timely note, such as trash night or expected weather].
Morning! Check-out is at [time]. Before you head out: [task one], [task two], and pull the door shut until it beeps. Leave everything else to us. Safe travels, and thanks for taking such good care of the place.
Two edits turn a template into your voice: swap the greeting for the one you actually use, and keep at most one question per message, because two questions get one answer. If you find yourself typing appliance directions into a message thread, that line belongs in the house manual instead, and the free generator will put it in the printed book where every guest finds it.